HTTP Status 404 - /myApp/helloWorld.do

最新推荐文章于 2024-07-12 14:10:45 发布

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最新推荐文章于 2024-07-12 14:10:45 发布

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本文链接：https://blog.youkuaiyun.com/qq_32697629/article/details/86511564

本文详细介绍了Spring MVC框架的配置过程，包括web.xml、dispatcherServlet-servlet.xml的设置，以及HelloWorldAction控制器的实现。同时，分享了index.jsp页面的展示逻辑，为初学者提供了实践案例。

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最近在重新学习 spring-mvc，其中的测试用例怎么也编译不过去。一直提示以下信息：请各位指点一二，谢谢！

xml的配置内容如下：

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4"
   xmlns="http://java.sun.com/xml/ns/j2ee"
   xmlns:xsi="http://www.w3c.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
   <servlet>
       <servlet-name>dispatcherServlet</servlet-name>
       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
       
       <init-param>
           <param-name>contextConfigLocation</param-name>
           <param-value>/WEB-INF/dispatcherServlet-servlet.xml</param-value>
       </init-param>
       <load-on-startup>1</load-on-startup>
   </servlet>
   
   <servlet-mapping>
       <servlet-name>dispatcherServlet</servlet-name>
       <url-pattern>*.do</url-pattern>
   </servlet-mapping>
</web-app>

index.jsp 内容如下：

<%@page contextType="text/html;charset=GBK"%>
<html>
<head><title>第一个Spring MVC 实例</title></head>
<%
String str=(String)request.getAttribute("helloWorld");
%>
<body>
<H1><%=str%><H1>
</body>
</html>

dispatcherServlet-servlet.xml 配置内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
   
   <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
       <property name="mappings">
           <props>
               <prop key="helloWorld.do">helloWorldAction</prop>
           </props>
       </property>
   </bean>

   
   <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       <property name="viewClass">
           <value>org.springframework.web.servlet.view.InternalResourceView</value>
       </property>
   </bean>
   
   <bean id="helloWorldAction" class="com.gc.action.HelloWorldAction">
       <property name="helloWorld">
           <value>HelloWorld</value>
       </property>
       <property name="viewPage">
           <value>/WEB-INF/JSP/index.jsp</value>
       </property>
   </bean>
</beans>

HelloWorldAction.java 代码如下：

package com.gc.action;

import org.apache.log4j.Logger;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.*;
import org.springframework.web.*;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class HelloWorldAction implements Controller{

   private Logger logger = Logger.getLogger(this.getClass().getName());
   private String helloWorld;
   private String viewPage;

//实现controller接口中的handleRequest()方法

   @Override
   public ModelAndView handleRequest(HttpServletRequest arg0, HttpServletResponse arg1) throws Exception {
       // TODO Auto-generated method stub
       Map model = new HashMap();
       model.put("helloWorld", getHelloWorld());
       return new ModelAndView(getViewPage(),model);
   }

   public String getHelloWorld() {
       return helloWorld;
   }

   public void setHelloWorld(String helloWorld) {
       this.helloWorld = helloWorld;
   }

   public String getViewPage() {
       return viewPage;
   }

   public void setViewPage(String viewPage) {
       this.viewPage = viewPage;
   }

}

文件路径如下：